Blepharitis describes inflammation of the eyelids affecting one or both eyes. Eyelid inflammation is a common presentation in dogs with a variety of underlying triggers.
• Dogs with blepharitis present with red, swollen eyes and usually wink or blink repeatedly
• Some dogs have discharge from the eyes, and often scratch or rub the affected area along the floor
• Blepharitis results from many different disease processes including infection, allergy, eyelid abnormalities, autoimmune disease, injury, or eyelid masses
• Investigation of blepharitis aims to identify the underlying trigger and involves physical examination, eye examination, and skin or blood testing
• Treatment options include direct treatment of blepharitis, such as anti-inflammatory eye drops, alongside treatment of the underlying trigger
• Prognosis varies depending on the underlying cause
• Most cases respond to medication but some diseases are recurrent and require long term treatment
Blepharitis is a common, and distressing, presentation in dogs but is not life-threatening. Blepharitis is a symptom of many different disease processes. Any disease that affects the eye, or the area around the eye, can result in self-induced injury and irritation, leading to blepharitis.
Blepharitis normally requires treatment, and delay in seeking veterinary treatment may result in complications such as severe ocular disease and blindness. Cases of blepharitis require prompt veterinary attention.
The severity of symptoms of blepharitis is relative to the severity of the underlying trigger. Dogs that persistently itch or rub their eyes on the floor have more severe blepharitis, regardless of the trigger. Given the wide range of diseases that are associated with blepharitis, any dog may be at risk of developing it. Dogs with predisposing factors for common causes of blepharitis are at highest risk. Senior dogs and young puppies are most at risk of developing diseases associated with blepharitis.
Some examples of diseases associated with blepharitis include:
• Bacterial infections such as styes
• Fungal infections such as ringworm (dermatophytosis)
• Keratoconjunctivitis sicca (Dry eye)
• Inhalant allergies (atopic dermatitis)
• Eyelid adenomas or papillomas (usually benign in dogs)
• Traumatic injuries to the eye
• Irritants such as smoke or dust
Symptoms of blepharitis include:
• Eye pain
• Itchiness around the eyes
• Blepharospasm (repeated blinking or winking)
• Red eye
• Swelling of the eyes and eyelids
• Hair loss around the eyelids
Further investigation of blepharitis involves:
• Physical examination
• Allergy testing
• Skin scrapes for parasites
• Culture and sensitivity for bacterial infections
• Blood work
• Biopsy of masses
In addition, a specialized eye exam may include:
• Schirmer Tear Test
• Fluorescein dye
• Ocular pressure measurement
Treatment of blepharitis aims to alleviate the symptoms while addressing the underlying disease process. Medications may include:
• Antibiotics
• Antifungal
• Antiparasitics
• Treatment of hormonal conditions where appropriate
• Steroids or other anti-itch medication
• Anti-inflammatory medications
In addition, supportive care may include:
• Hot compresses to reduce swelling
• Use of an Elizabethan collar
• Routine cleaning of the eye
In some cases, surgery to remove masses may be indicated.
Prognosis varies depending on the underlying cause. Infectious conditions normally resolve with treatment and carry an excellent prognosis, whereas underlying disease such as dry eye normally respond well to treatment but require lifelong therapy.
Prevention depends on the underlying disease. Routine use of veterinary approved antiparasitics prevents parasitic blepharitis. Other underlying diseases are spontaneous and cannot be prevented, but prompt veterinary treatment of diseases resulting in ocular irritation or pain may prevent blepharitis from developing. Keeping up with routine checkups and vaccinations helps maximize overall health and aids in early detection of many conditions.
Blepharitis is common in dogs.
• Antibiotics
• Antifungal
• Antiparasitics
• Treatment of hormonal conditions where appropriate
• Steroids or other anti-itching medication
• Hot compresses to reduce swelling
• Use of an elizabethan collar
• Surgery
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